CN103542077B - The bearing lubrication structure of differential gearing - Google Patents
The bearing lubrication structure of differential gearing Download PDFInfo
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- CN103542077B CN103542077B CN201310174303.0A CN201310174303A CN103542077B CN 103542077 B CN103542077 B CN 103542077B CN 201310174303 A CN201310174303 A CN 201310174303A CN 103542077 B CN103542077 B CN 103542077B
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- capture unit
- oil
- driven gear
- end driven
- axial
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0427—Guidance of lubricant on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The bearing lubrication structure of a kind of differential gearing is provided, unrelated with the height of speed, provide left and right bearing equably by the oil that the end driven gear being located at differential case is kicked up.The frid (27) on the top being arranged in end driven gear (18) has: the 1st oil capture unit (28), it is relative with the outer peripheral face of end driven gear (18) and extends from axial end side；And the 2nd oil capture unit (29), it extends to axially another side from the 1st oil capture unit (28), when observing along the radial direction of end driven gear (18), 1st oil capture unit (28) is to incline direction predetermined oblique angle (θ b) of the flank of tooth (18a), when observing along the radial direction of end driven gear (18), 2nd oil capture unit (29) extends substantially in the axial direction, therefore the oil kicked up by end driven gear (18) and collide with frid (27) is assigned in different ratios axial end side and another side axial, thus, the bearing (20 at the axial two ends supporting differential case (15) can be lubricated equably, 21).
Description
Technical field
The present invention relates to the bearing lubrication structure of differential gearing as described below: be accommodated in the differential gearing of transmission internal
There is the end driven gear of the periphery being fixed on differential case, by described end driven gear from described change speed gear box
The frid (gutter plate) on the oil kicked up of the bottom top that is configured in this end driven gear catch and to axially
Both sides are distributed, and thus, the axial two ends of described differential case are supported on the bearing on described change speed gear box by lubrication.
Background technology
According to following patent documentation 1, herein below is it is well known that differential with cross in inside storage in change speed gear box
The mode of the top of the differential case of gear configures the catheter component of anti-U-shaped, makes the lower end, left and right of catheter component
The bearing of the left and right in the face of being rotatably supported on change speed gear box by differential case, is located at the end of differential case
The bearing of left and right is caught and be supplied to the oil that driven gear is kicked up from the bottom of change speed gear box by catheter component.
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2001-180313 publication
Summary of the invention
But, usual end driven gear is arranged to from the center of differential case side's bias in the lateral direction, and
And end driven gear is made up of the asymmetrical gear in left and right as helical gear or helical gear, therefore end driven tooth
The amount of the oil that wheel is kicked up is uneven in the left side of differential case and right side.
But, in above-mentioned conventional technology, catch kick up oil catheter component be symmetrical shape, therefore by
Catheter component is supplied to the oil mass of left and right bearing may be uneven.Particularly when low speed and during high speed, end from
The dispersing mode of the oil that moving gear is kicked up changes, and the oil mass being therefore supplied to left and right bearing may be more uneven, needs
Want corresponding countermeasure.
The present invention completes in view of aforesaid situation just, it is intended that unrelated with the height of speed, will be located at
The oil that end driven gear on differential case is kicked up is supplied to left and right bearing equably.
To achieve these goals, according to the invention of the 1st aspect, the bearing lubrication structure of a kind of differential gearing is proposed,
The differential gearing being accommodated in transmission internal has the end driven gear of the periphery being fixed in differential case, by institute
State the groove that end driven gear is configured in the top of this end driven gear from the oil kicked up in the bottom of described change speed gear box
Plate catches and distributes to axial both sides, and thus, the axial two ends of described differential case are supported on described speed change by lubrication
Bearing on case, the bearing lubrication structure of this differential gearing is characterised by, described end driven gear is by helical gear
Constituting, the axial end side of its flank of tooth has relative to the axial other end lateral direction of rotation advance side bias, described frid
Have: the 1st oil capture unit, it is relative with the outer peripheral face of described end driven gear and extends to axial end side；And
2nd oil capture unit, it extends, along described end driven gear to axially another side from described 1st oil capture unit
Radial direction observe time, described 1st oil capture unit to the incline direction predetermined oblique angle of the described flank of tooth, along described end
When the radial direction of end driven gear is observed, described 2nd oil capture unit extends the most in the axial direction.
Additionally, according to the invention of the 2nd aspect, propose the bearing lubrication structure of a kind of differential gearing, it is characterised in that
In addition to the structure of the invention of the 1st aspect, described frid has and separates described 1st oil capture unit and described 2nd oil trap
Catch the partition wall between portion.
It addition, the angular contact roller bearing 20,21 of embodiment is corresponding with the bearing of the present invention.
According to the structure of the 1st aspect, when the differential case being accommodated in the differential gearing of inside of change speed gear box rotates,
It is fixed on the oil that the end driven gear of its periphery kicks up from the bottom of change speed gear box to be caught by frid and to axial both sides
Distribution, the bearing that the axial two ends of differential case are supported on change speed gear box by lubrication.End driven gear is by helical tooth
Wheel is constituted, and the axial end side of its flank of tooth is relative to the axial other end lateral direction of rotation advance side bias, therefore end
The oil that driven gear is kicked up spreads unevenly in axial end side and another side axial, and its uneven degree is low
Speed time-varying is big, high speed time diminish.The frid on the top being arranged in end driven gear has: with end driven tooth
The 1st oil capture unit that the outer peripheral face of wheel relatively and extends to axial end side；And from the 1st oil capture unit to the most another
The 2nd oil capture unit that end side extends, when observing along the radial direction of end driven gear, the 1st oil capture unit is to the flank of tooth
Incline direction predetermined oblique angle, along end driven gear radial direction observe time, the 2nd oil capture unit substantially at axle
Upwardly extend, therefore, end driven gear is kicked up and with frid collision oil in different ratios to axial end side
With axially another side distribution, it is possible to lubricate equably the bearing at the axial two ends supporting differential case.
Additionally, according to the structure of the 2nd aspect, frid has and separates between the 1st oil capture unit and the 2nd oil capture unit
Partition wall, therefore, particularly when low speed, it is possible to the oil kicked up by end driven gear is assigned to groove accurately
1st oil capture unit of plate and the 2nd oil capture unit.
Accompanying drawing explanation
Fig. 1 is the rearview of differential gearing.
Fig. 2 is the front view of differential gearing.
Fig. 3 is the figure of the shape illustrating frid.
Action Specification figure when Fig. 4 is low speed.
Action Specification figure when Fig. 5 is high speed.
Label declaration
11: change speed gear box
15: differential case
18: end driven gear
18a: the flank of tooth
20: angular contact roller bearing (bearing)
21: angular contact roller bearing (bearing)
27: frid
28: the 1 oil capture units
28g: partition wall
29: the 2 oil capture units
D: differential gearing
θ b: angle
Detailed description of the invention
Hereinafter, according to Fig. 1～Fig. 5, embodiments of the present invention are illustrated.
Fig. 1 and Fig. 2 is used in vertical the change by the automobile of front-mounted engine/front-wheel drive that vehicle-width direction extends
The sectional view that the differential gearing D of speed device obtains after cutting off, Fig. 1 is the figure observed from car body rear, and Fig. 2 is from car
The figure of body forward observation.In this manual, axial end side will be defined as on the left of the car body of automobile, by the car of automobile
Axially another side it is defined as on the right side of body.
Change speed gear box 11 is configured to the 2nd housing 13 of the 1st housing 12 in left side with right side is tied merga pass bolt 14 ...
It is integrally bonded.The differential case 15 of differential gearing D be configured to make the 1st halfbody the 16 and the 2nd halfbody 17 rib 16a,
17a overlaps, by bolt 19 ... the inner peripheral portion of ring-type end driven gear 18 is fastened.Differential case 15
1st halfbody 16 is rotatably supported on the 1st housing 12 via angular contact roller bearing 20, differential case
2nd halfbody 17 of 15 is rotatably supported on the 2nd housing 13 via angular contact roller bearing 21.
It is being fixed on the pinion shaft 22 on the 2nd halfbody 17 of differential case 15 along axle right angle orientation, is rotating
Support little a pair gear 23,23 freely, the 1st housing 12 of through change speed gear box 11 and differential case 15
The axle head of the left axletree 24 of the 1st halfbody 16 is combined with side gear 26 spline being engaged in little a pair gear 23,23,
The axle head of the right axletree 25 of the 2nd housing 13 of through change speed gear box 11 and the 2nd halfbody 17 of differential case 15 with
Side gear 26 spline being engaged in little a pair gear 23,23 combines.
From Fig. 1～Fig. 5, the frid 27 integrally formed by synthetic resin is arranged in differential along vehicle-width direction
The top of gear D.Frid 27 has: prolong to the left from the position relative with the outer peripheral face of end driven gear 18
The 1st oil capture unit 28 stretched；And from the 1st oil capture unit 28 extend to the right the 2nd oil capture unit 29.
1st oil capture unit 28 has the diapire 28a extended in the horizontal direction and before the direction of rotation of diapire 28a
Enter the longitudinal wall 28b that side erects, be formed as cross section L-shaped.From Fig. 4 and Fig. 5, when observing along axle right angle orientation
Time, before the flank of tooth 18a of end driven gear 18 is with the left side direction of rotation relative to right side terminad driven gear 18
The mode entering lateral deviation partial has tilted angle, θ a.When observing along axle right angle orientation, the longitudinal wall 28b of the 1st oil capture unit 28
With the flank of tooth 18a of end driven gear 18 to inclined, but its angle, θ b is set to than flank of tooth 18a's
Angle, θ a is little.On the other hand, the angle of the longitudinal wall 29b of the 2nd oil capture unit 29 is set to 0 °.I.e. the 2nd oil trap
The longitudinal wall 29b catching portion 29 is configured to relative to axially in parallel.
Additionally, the axial one end in the 1st oil capture unit 28 is formed with downward projection of oil backflow prevention rib 28c,
Further, the surface in the direction of rotation advance side of the longitudinal wall 28b of the 1st oil capture unit 28 is formed with determining of triangle
Position rib 28d.Left end at positioning rib 28d is formed with in axle right angle orientation the locating surface 28e extended, and,
The upper limb of longitudinal wall 28b is formed with the locating surface 28f extended in the axial direction, additionally, on the limit with the 2nd oil capture unit 29
Vertically extending partition wall 29g is formed in boundary.
The 2nd oil capture unit 29 more large-scale than the 1st oil capture unit 28 has the most stepped with lower section in the horizontal direction prolonging
The diapire 29a stretched and the longitudinal wall 29b erected from the direction of rotation advance side of diapire 29a and be formed as L word in cross section
Shape.Before the pillar 29c that the surface of the direction of rotation advance side of the longitudinal wall 29b from the 2nd oil capture unit 29 is prominent
End forms the folder 29d prominent towards right side.Additionally, the upper limb at the longitudinal wall 29b of the 2nd oil capture unit 29 is formed calmly
Plane 29e, and, form downward projection of engaging protrusion 29f in the right part of the 2nd oil capture unit 29.
The frid 27 of so composition is installed on change speed gear box 11 according to following operation.That is, by the 2nd of frid 27
Across folder 29d and the 2nd housing 13 at change speed gear box 11 of pillar 29c setting on the longitudinal wall 29b of oil capture unit 29
Side of sidewall portion 13a on folder hole 13c engaging (with reference to Fig. 2) of boss (boss) portion 13b that arranges, and, will set
Put the sidewall that engaging protrusion 29f of right-hand member in the 2nd oil capture unit 29 is inserted in the 2nd housing 13 of change speed gear box 11
Recess 13f that portion 13a is formed with pad 30 anticreep (reference Fig. 1), is thus fixed on change speed gear box by frid 27
On 11.
In this condition, the locating surface 28f of longitudinal wall 28b of the 1st oil capture unit 28 of frid 27 and the 1st housing 12
Upper wall portions 12a and the 2nd housing 13 upper wall portions 13d abut (seeing figures.1.and.2), the 1st oil capture unit 28
The locating surface 28e of positioning rib 28d and the side of sidewall portion 12b of the 1st housing 12 abut (seeing figures.1.and.2), this
Outward, the locating surface 29e of longitudinal wall 29b and upper wall portions 13e of the 2nd housing 13 of the 2nd oil capture unit 29 abuts (ginseng
According to Fig. 1 and Fig. 2), thereby, it is possible to stable posture support frid 27.
Then, the effect to the embodiments of the present invention with said structure illustrates.
When escort vehicle travels, when end driven gear 18 rotates together with the differential case 15 of differential gearing D,
The oil of the bottom accumulating in change speed gear box 11 is kicked up by end driven gear 18.The oil kicked up is by the 1st of frid 27 the
Longitudinal wall 28b, 29b of oil capture unit the 28 and the 2nd oil capture unit 29 block, along the diapire of the 1st oil capture unit 28
The angular contact roller bearing 20 on the left of oil lubrication on the left of the 28a flow direction, along the diapire 29a of the 2nd oil capture unit 29
Angular contact roller bearing 21 on the right side of oil lubrication on the right side of the flow direction.
As shown in Figure 4, when low speed, end driven gear 18 impetus of the oil upwards kicked up is more weak, therefore
The major part of the oil being attached on end driven gear 18 dropped to the relatively downside of flank of tooth 18a before arriving frid 27
(right side) (reference arrow A), the oil fallen is provided to the angular contact roller bearing 21 on right side.
It is attached on end driven gear 18 and arrives the oil (reference arrow B) of frid 27 by the 1st oil capture unit
28 and the 2nd oil capture unit 29 is blocked and is distributed with right side to the left, it is assumed that oil is impartial to axial both sides by frid 27
Ground distribution, then the amount of the oil dropping to right side before arriving frid 27 can make the low on fuel on the left of the flow direction, may
The lubrication that can cause the angular contact roller bearing 20 in left side is insufficient.
But, when low speed, be attached to end driven gear 18 and arrive frid 27 oil the impetus more weak, because of
This is to axially diffusing, its major part and the partition wall 28g separating the 1st oil capture unit the 28 and the 2nd oil capture unit 29
Left side, the i.e. the 1st oil capture unit 28 collide.Now, due to the 1st oil capture unit 28 longitudinal wall 28b left side to
Direction of rotation advance side has tilted angle, θ b, the longitudinal wall 28b that therefore major part with the oil of longitudinal wall 28b collision is inclined by
Guide and flow to left side (reference arrow BL), cross partition wall 28g and flow to few (the reference arrow of quantitative change of the oil on right side
Head BR).
As a result of which it is, the oil mass (BL) of the angular contact roller bearing 20 in left side can be provided to and provides to right side
The oil mass (A+BR) of angular contact roller bearing 21 generally uniform, lubricate the angular contact Roller Shaft of left and right equably
Hold 20,21.
As it is shown in figure 5, when high speed, the impetus of the oil upwards kicked up by end driven gear 18 is relatively strong, therefore
It is attached in the oil of end driven gear 18, before arriving frid 27, drops to the relatively downside (right side) of flank of tooth 18a
Oil ratio reduce (reference arrow A) compared with during low speed.
It is attached to end driven gear 18 and arrives oil (reference arrow B) and the 1st oil capture unit 28 of frid 27
Colliding with the 2nd oil capture unit 29 fierceness and rebound, therefore this oil can cross the right side easily on the left of partition wall 28g
Side, and, the longitudinal wall 28b of the 1st oil capture unit 28 of inclination guides the effect of oil to play the most fully to the left,
Therefore arrive in the oil of frid 27, the amount (reference arrow BL) on the left of the flow direction and the amount (reference arrow on the right side of the flow direction
BR) compare slightly larger.
As a result of which it is, the oil mass (BL) of the angular contact roller bearing 20 in left side can be provided to and provides to right side
The oil mass (A+BR) of angular contact roller bearing 21 generally uniform, lubricate the angular contact Roller Shaft of left and right equably
Hold 20,21.
As it has been described above, no matter when low speed or during high speed, by the shape of well-designed frid 27, permissible
Oil is equally distributed over the angular contact roller bearing 20,21 of left and right, it is possible to reliably lubricate angular contact roller bearing
20,21 and improve ruggedness.
Additionally, be provided with partition wall 28g on the border of the 1st oil capture unit the 28 and the 2nd oil capture unit 29, therefore special
It not can be reliably to the oil that the 1st oil capture unit 28 side and the 2nd oil capture unit 29 side distribution are appropriate when low speed.
Further, the left end in the 1st oil capture unit 28 is provided with the oily backflow prevention rib 28c downwardly extended, therefore, it is possible to anti-
Only along the 1st oil capture unit 28 diapire 28a upper surface flowing oil along diapire 28a lower surface to the right
Backflow, reliably provides the angular contact roller bearing in left side.
Above, embodiments of the present invention are illustrated, but the present invention can be in scope without departing from the spirit
Carry out various design alteration.
Such as, tilt angle theta b of the longitudinal wall 28b of the 1st oil capture unit 28 is not limited to the angle of diagram, can be greatly
In 0 ° and less than end driven gear 18 flank of tooth 18a tilt angle theta a in the range of, according to the 1st oil capture unit
The area ratio etc. of the longitudinal wall 29b of the longitudinal wall 28b of 28 and the 2nd oil capture unit 29 and be suitably set.
Furthermore it is preferred that the angle of inclination of the longitudinal wall 29b of the 2nd oil capture unit 29 is 0 ° (relative to axially in parallel),
But can also incline direction relative to the flank of tooth 18a of end driven gear 18 at equidirectional or rightabout somewhat
Tilt.But, this angle of inclination is less than tilt angle theta b of the longitudinal wall 28b of the 1st oil capture unit 28.
Additionally, the bearing of the present invention is not limited to the angular contact roller bearing 20,21 of embodiment.
Claims (2)
1. a bearing lubrication structure for differential gearing, wherein, is accommodated in the differential gearing that change speed gear box (11) is internal
(D) there is the end driven gear (18) of the periphery being fixed in differential case (15), by described end from
Moving gear (18) is configured in this end driven gear (18) from the oil kicked up in the bottom of described change speed gear box (11)
The frid (27) on top catches and distributes to axial both sides, and thus lubricate described differential case (15) is axial
The bearing (20,21) that two ends are supported on described change speed gear box (11), the spy of the bearing lubrication structure of this differential gearing
Levy and be,
Described end driven gear (18) is made up of helical gear, the flank of tooth (18a) of described end driven gear (18)
Axial end side relative to the axial other end lateral direction of rotation advance side bias,
Described frid (27) has:
1st oil capture unit (28), it is relative with the outer peripheral face of described end driven gear (18), and from described
The position that the outer peripheral face of end driven gear (18) is relative extends to axial end side；And
2nd oil capture unit (29), it extends to axially another side from described 1st oil capture unit (28),
When observing along the radial direction of described end driven gear (18), described 1st oil capture unit (28) is to described tooth
Incline direction predetermined oblique angle (θ b) in face (18a), observes in the radial direction along described end driven gear (18)
Time, described 2nd oil capture unit (29) extends in the axial direction.
The bearing lubrication structure of differential gearing the most according to claim 1, it is characterised in that
Described frid (27) have separate described 1st oil capture unit (28) and described 2nd oily capture unit (29) it
Between partition wall (28g).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012153653A JP2014015979A (en) | 2012-07-09 | 2012-07-09 | Bearing lubrication structure of differential gear |
| JP2012-153653 | 2012-07-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103542077A CN103542077A (en) | 2014-01-29 |
| CN103542077B true CN103542077B (en) | 2016-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310174303.0A Active CN103542077B (en) | 2012-07-09 | 2013-05-13 | The bearing lubrication structure of differential gearing |
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| Country | Link |
|---|---|
| JP (1) | JP2014015979A (en) |
| CN (1) | CN103542077B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6187353B2 (en) * | 2014-03-27 | 2017-08-30 | アイシン・エィ・ダブリュ株式会社 | Power transmission device |
| JP6105535B2 (en) * | 2014-09-16 | 2017-03-29 | 本田技研工業株式会社 | Differential gear lubrication structure |
| JP2019007522A (en) * | 2017-06-22 | 2019-01-17 | 新日鐵住金株式会社 | Railroad vehicle gear device |
| JP7000946B2 (en) * | 2018-03-26 | 2022-01-19 | マツダ株式会社 | Vehicle transfer structure |
| DE102021132154B3 (en) * | 2021-12-07 | 2023-05-11 | Schaeffler Technologies AG & Co. KG | Gearbox with encapsulated gear |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59140963A (en) * | 1983-01-31 | 1984-08-13 | Aisin Warner Ltd | Lubricating device for differential mechanism |
| JPH08135771A (en) * | 1994-11-12 | 1996-05-31 | Hino Motors Ltd | Lubricating device for inter-axle differential |
| JP3719582B2 (en) * | 1999-12-21 | 2005-11-24 | 本田技研工業株式会社 | Lubrication structure of final reduction gear |
| US6964320B2 (en) * | 2003-01-28 | 2005-11-15 | Torque-Traction Technologies, Inc. | Lubrication arrangement for final drive unit |
| JP4409929B2 (en) * | 2003-12-19 | 2010-02-03 | 本田技研工業株式会社 | Lubrication structure of differential equipment |
| US7258641B2 (en) * | 2005-08-08 | 2007-08-21 | Dana Corporation | Power divider lubrication in tandem drive axles |
| JP5333320B2 (en) * | 2010-03-31 | 2013-11-06 | アイシン・エィ・ダブリュ株式会社 | Power transmission device |
| CN102770691B (en) * | 2010-03-31 | 2015-07-15 | 爱信艾达株式会社 | Vehicle transmission |
-
2012
- 2012-07-09 JP JP2012153653A patent/JP2014015979A/en active Pending
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| CN103542077A (en) | 2014-01-29 |
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